Friction draft-rigging.



J. P. OCONNOR. FRIGTION ,DRAFT RIGGING.

APPLICATION FILED DEG. 18, 1909. .l 1 ,060, 1 3 Patented Apr. 29, 1913.

2 SHEETS-SHEET 2.

INVENmR l John F O Con/70x Bv #oleo c H/5 ATTORNEYS B the draw-bar, Bl

4'nnTTi/sn sTafTns PATENT OFFICE.

JOHN F. OCON'NOR,

or cHIcAGo, ILLINOIS, assmnon, BY MEsNE assrGNMEN'Ts, To

.- I WILLIAM H. MINER, QF CHICAGO, ILLINOIS.

= rnIcTIoN naam-mesme.

My. invention consists in thenovel con- Speoication of Letters Patent. l

Application nled December 18, 1909. Serial ltd-533,741.

struction of partsv and devices and in the novel combinations of parts and devices herein shown and described and more particularlyspeciiied in the claims. In the-accompanyingdrawing forming a part of this specification, Figure 1 is a side elevation, partly in central, vertical section of a-fri'ction draft rigging embodying my invention. -Fi .l 2 isa planview, partly-in vertical .cross `sections on 'lines 5-'5 and -6-6 res ectively of Fig. 1. Fig. 7 is a partial detailpperspective view showing one corner of the telescoping and connected,

f 25'frict-i'on shell and spring case. Fig'. 8 is a -detail, perspective view of onejof the fric- -tion shoes, and Fig. 9 is an elevation of the wedge.

:In the drawing, A4 A 'represent the center 30- sills or other draft'meinber's of the car frame to which .the draft rigging is applied, A the front or end sill, A.z the buffer block orplate, the draft yoke secured to the draw-bar by rivets vb and interen ag- A ingf'bs or shoulders b* 6*, CC1 the fol owers, the stop members riveted to the draft sills and provided with front and rear sto i s d d and limiting stops d, andE, E1 E2 t e springs nesting one within another.

F is a longitudinallyv movable friction shell connected toand having a limited tele' scopic movement with a separate piece spring case F1 which incloses the springs fand abuts at itsrear endagainst the rear Y 5f follower C1.V The friction shell F has an interior and preferably cylindric friction face l 20 horizontal section. Figs. 3, 4, 5 and 6 are- 3-3, 4 4,-

. j in sliding frictional engagement with the' exterior Yfriction face g of the segmental fric-v tion shoes G. 'At its inner or rear end, the 5'0 friction shell F fits or telescopes within the ou'ter or front end ofA the sprinl7 case F1, the Y inner wall j? of which is reigerably cylindrical. The friction shell and the s :irate piece spring case F1 have a limited siding .spring seat or cap Y' of the friction shell F and abuts -against the 470 segmental frictionshoes G, and it is pro- -ing face Ii against theen Patented Apr. 29, 19,13.

or telescopic movement .in respect to each y other to provide for a preliminary compression of the springs before the friction re-' sistance mechanism comes into action, and. thus cause the draft riggingto properly cushion light strains or blows. The friction '60 y shell is provided with anfexterior slioulder, rib or flange f to limitthe sliding or telescopic movement of the friction shell in respect to the spring'case by engagement with the front end f* of the spring case.

H and H1 are spring caps or seats fitting] A,within the spring case F1 and against which the ends' of the s rings abut. The front l fits withinthe rear end -f vided with an-exterior annular shoulder or vrimz` lThe front spring seat oi'ccap H is preferably recessed or cut away at its central portion at h1 Ato give it onl' anoutcr bear- 75 of thefriction shoes- Gr.- The rear. friction cap or seat H1 has an external shoulder or flange h 'en aging the internal fiange or4 shoulder. f. o the s'ing case F. vThe rear oi" outer face of 80 t cap H has a denti-al recess k* to receive .the end lc of theiconnecting rod K.'

.The-friction shell F and springl case F1. are preferably connected together in sucli manner as to provide for the limited. sliding 35 or telescopic movement of the one in respect to the other by short connecting bolts' F2 extendin through external connecting members f' of the cese and shell at the four corners thereof. The spring case F1 has a-:go

substantially rectangular external wallffnrnished with recesses f? at th corners tofforni the external connectin member'fT through which the 'connecting holt-F2 'pa'.sses. The Hangs or rim f3 of the friction shell also preferably externally substantiall rectangular in form, andthe corners o this Harige are thickened or enlargedlongitudinelly to form the connecting member aswill be `readily, understood from Figs. 2 and 100.1 -7 of the drawing. The friction shoes G are furnished .with inclined or wedging faces gzand -seats or shoulders g forthe antifriction rollers G2 which are interposed .between the inclined' or wedging faces g of 105 the friction shoes and the corresponding'-inl clined or Weding faces g*'of the .wedge The friction oes G 'are preferably three in Fis' sembled position and also to maintain the .1. afriction rig y vthe'combinarios? with' @draw-bar,- dg? stop members,j of; a longitudinally movablenEfsT AVAILABLE COPY The wedge Gr1 has a central recess gs to i receive the head k1 of the connecting rod -K'which-extendsbetween the wedge and the rear spring seat orfcap H1 and serves. to connect all the parts and hold them in assprings E El E2 under an initial tension or compression.' e

M is a removable tie-plate upon which the `draft-yoke B1 rests and Vwhich supports the draft rigging between the Vdraft sills, the same being preferably removably secured to vthe lower flanges ofthe draftsills by short -2-Oconnecting bolts m. The springs E E1 E2 are preferably of suoli length as toprovide for a three'inch travelA in compression, and

tended cushioning actionK Iclaima.-

yoke and friction`- shell having an internal cylindric friction face, la longitudinally movable separate piece spring case having a limited sliding lmovement in respect-to said shell, a spring within said. case,- a-nd longitudinally 3'5 --reciprocatin friction shoes havin external cylindric fntionjaces and a w ge within saidshell,said. friction shell and -spring case having external' projectin members and connecting bolts extending trough and slidable rsaid members, substantially as 2. Ina friction draft rigging, the combination with a draw-bar, draft yoke and stop members, of a longitudinally movable friction-shell having an internal cylindric fric tion face, a longitudinally movable separate piece spring case having' a limited sliding movement in respect to said shell, a .spring Within said case, and longitudinally reciprocating friction shoes having external cylindric friction faces and a 'Wedge within said sli'ell, said friction shelljand spring case having at the corners thereof external projectmg members'ancl connecting bolts extending through saidmembers, substantially as specified. A 3.- In a rlction'draft rig g, the combicase having a limited sliding. movement in nation lWit-li a friction shel friction shoes 'and wedge, of'a. separate piece internally -fcylindrie and externally rectangular spring A thus afford, in. connection. with the, friction shell and friction shoes 'a powerful) and .ex-

'60 respect to said shell, and a spring'within said case reacting at one end'- through said casea'gainst the friction shell and :atfthe other` end against the friction shoes when the case and shell are vin their most extended position relatively to each other, said frictionshell having an external shoulder to limit its sliding movement in respect 'to said spring' case, and bolts .at the corners of said spring case connecting the same with said friction shell.

JOHN F. oooNNoR.

Witnesses: I

E nMUNn ADCoCK, PEARL ABRAMs.

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l l 1 Washington, IJ. C. 

